Powerbag

Outside, Powerbags, which start at $139.99, look like your average nicely-made backpacks, messenger bags and briefcases. Inside, they pack hefty built-in batteries, letting you recharge phones, tablets and other USB-compatible gadgets, including Apple products, while they’re stowed away. Buy a Powerbag and keep it charged, and you can work all day without nervously eyeballing the battery gauges on your gizmos, carrying multiple AC adapters or hunting for wall outlets.

I bought one the other day and I really like it. But I was a lil Eh about the brightness so I was thinking about returning it and getting maybe the aaxa p4-x I saw in this video http://youtu.be/CdREaRWIocE